| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] it [adv] difficult [coord] | 9 |
|
| 2 | make it [adv] difficult [coord] | 5 |
|
| 3 | it be [adv] difficult [coord] | 17 |
|
| 4 | it [be] [adv] difficult [coord] | 17 |
|
| 5 | it [is] [adv] difficult [coord] | 14 |
|
| 6 | it is [adv] difficult [coord] | 10 |
|
| 7 | it [adv] difficult [to-vb] [coord] | 10 |
|
| 8 | it [adv] difficult [verb] [coord] | 10 |
|
